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ideapad: check VPC bit before sync rfkill hw status 

Check VPC bit to make sure the HW rfkill is touched.

Signed-off-by: Ike Panhc <ike.pan@canonical.com>
Signed-off-by: Matthew Garrett <mjg@redhat.com>
wifi-calibration
Ike Panhc 2010-10-01 15:39:05 +08:00 committed by Matthew Garrett
parent 6a09f21dd1
commit 8e7d354370
1 changed files with 15 additions and 1 deletions
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16
drivers/platform/x86/ideapad_acpi.c
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@ -379,7 +379,21 @@ static int ideapad_acpi_remove(struct acpi_device *adevice, int type)
static void ideapad_acpi_notify(struct acpi_device *adevice, u32 event)
{
ideapad_sync_rfk_state(adevice);
acpi_handle handle = adevice->handle;
unsigned long vpc1, vpc2, vpc_bit;
if (read_ec_data(handle, 0x10, &vpc1))
return;
if (read_ec_data(handle, 0x1A, &vpc2))
return;
vpc1 = (vpc2 << 8) | vpc1;
for (vpc_bit = 0; vpc_bit < 16; vpc_bit++) {
if (test_bit(vpc_bit, &vpc1)) {
if (vpc_bit == 9)
ideapad_sync_rfk_state(adevice);
}
}
}
static struct acpi_driver ideapad_acpi_driver = {